. A text-book of human physiology . Fig. 229.—Schema of the mechanism of accom-modation, after Schon. The form of the lenswhen the eye is adjusted for near vision isshown bv the dotted Hne. ACCOMMODATION 535. viAl-—^-\-Pupil. Convergence. Fig. 230.—Schematic representation of the optic tracts, modified from Fuchs. The field of vision common to the two ej-es is composed of a right half, G, and a left half, G,. Theformer corresponds to tlie left halves I and /„ of the two retinae, the latter to the right halvesrand r,. The boundary between the two halves of the retina
. A text-book of human physiology . Fig. 229.—Schema of the mechanism of accom-modation, after Schon. The form of the lenswhen the eye is adjusted for near vision isshown bv the dotted Hne. ACCOMMODATION 535. viAl-—^-\-Pupil. Convergence. Fig. 230.—Schematic representation of the optic tracts, modified from Fuchs. The field of vision common to the two ej-es is composed of a right half, G, and a left half, G,. Theformer corresponds to tlie left halves I and /„ of the two retinae, the latter to the right halvesrand r,. The boundary between the two halves of the retina is formed by the vertical merid-ian. This passes through the fovea centralis, /, in which the line of vision (F) drawn fromthe point of fixation, F, impinges upon the retina. The optic nerve fibers arising from theright halves, r and r,, of the two retinae (indicated by the dotted line) all pass into the rightoptic tract, T, while the fibers belonging to the left halves, I and l„ of the two retinae passinto the left optic tract, T,. The fibers of each optic tract for the most part ;s to the cortexof the occipital lobe, ; the smaller portion of them, m, goes to the oculo motor nucle
Size: 1303px × 1918px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiology, bookyear1
